Little ones will have a hard time getting the perspective right --- but
most will be able to use the parallel line approach. I bet most of your
students have made a 3-D looking box by connecting two over lapping
squares.
I introduced one point perspective one day. Students drew boxes above -
on - and below the horizon line..... and then as a free time activity
during our next unit, I put copies of Bunki's students' work out. My
students had fun experimenting (had all sorts of critters crawling in and
out) -- without my instruction. Of course the results were not any ways
near as good as Bunki's kids.
